Arufina Villanova is a member of a society of assassins known as the Scarlett Circle, an organization trumped in mystery and cloak-and-dagger-ness by only the Ephemeral Cartographers. Her older sister was a Cartographer before the war, and Aru might have been as well. Something else happened, however, and Arufina’s sister disappeared, putting Arufina on the run.
Blackwood Empire 